Hydraulic pressing device for application to the press-rolls of pulp or paper making machines.



J. L. GOENEN. HYDRAULIC PREssING DEVICE FOR APPLICATION 1'0 THE PRESSROLLS OF-PULP I 0B. PAPER MAKING MACHINES. APPLICATION Hum HAY a, 1908.

' v Patented Oct. 13,1908. 2e

M M n 1 1. I. Tgg. 5- .25 i 31 1 WITNESSES: H E INVENTOR 114. fillw. HMI guht LEneq a1 f.'{ q, 5", I ATTORNEY UNITED STATES PATENT OFFICE.

. JOHN LOUIS COENEN, OF LITTLE CHUTE, WISCONSIN.

' HYDRAULIC mmssI e DEVICE non APPLICATION 'ro THE Panes-nous F PULP onPAPER MAKING MACHINES.

delivering water from each pump to the 113 Specification of LettersPatent.

Patented Oct. 13, 1908.

To all whom it may concern:

Be it known that 1, JOHN LOUIS Coleman, a citizen of the United States,residing at Little Chute, in the county of Outagamie and State ofWisconsin, have invented a new and useful Hydraulic Pressing Device forApplication to the Press-Rolls of Pulp .or Paper Making Machines.

My invention relates to improvements in the manner of applying hydraulicpressure to rolls which are used in the manufacture of paper, and isparticularly designed to be applied to the upper roll in a wet machinefor makin pulp and forming it into sheets, and its ob ect is, tofacilitate the control of the pressure upon the roll by means of a h.dranlic pressure cylinder connected direct y to the journal box of theupper roll; said pressure being supplied preferably,-b two pumps capableof deliverin degrees 0 pressure varying widely, and aving pipes fordraulic cylinders connected with the two journals of the roll, saidpipes being supplied with two valves which are arranged in position foreasy access by the operator, and

where he can apply the force from either pump and to either end of thehydraulicpressure cylinders by the swinging of levers within easy reachfor operating each valve, the mechanism being shown in the accompanyinidrawing, in which,-

Y igure '1 is a side elevation of a portion of one end of the frame of awet machine, and showing the press rolls therein, a hydraulic cylinderabove the journals of said rolls, a high and a low ressurepump, and anarrangement of pipes eading from the pum s to the c linder, with theirvalves. Fig. 21s a front e evation of a wet machine and showing therolls with their journals supported-upon the frame, the hydrauliccylinders in position above the journals, and the pipes connecting thetwo cylinders, and an end elevation of the two pumps, the rolls andpipes being broken midway their ends Fig. 13, is a-plan of the hydraulic.cylinderlend and showing the manner in which it is secured to themachine frame standard, and also, the manner in valve. Fig. 6 is a likesection of a cut off, or four Way valve. Fig. 7 is a side elevation ofthe stem of the four way valve. Figs. 4, 5,

6 and 7 are upon alarger scale than the other figures.

Similar numerals and letters indicate like parts in the several views.

1, indicates the frame of the machine which sup orts the pressing rolls2 and 3 and also a sma 1 roll 4, the two end frames being spaced apartand held to ether with a rod 5. The roll 3 is provided wit journals 6,one of which is extended and carries a gear wheel 7 by which the rollsmay be driven from a suitable source of power, said 1 journals beingmounted in journal boxes 8, upon the frame 1. Rising from each frame 1,is a standard 9, having planed wings, or .rways, 10, u on which journalboxes 11, are arranged to s ide vertically, the journals 12 of the roll2 being half inelosed by said boxes.

The boxes 1 1 are held to the standard wings 10 by keepers 13, one beingbolted to each end of the journal box with bolts 14. Bolted toeachstandard near their upper ends through bracket 15 with bolts 16 is ahydraulic pressure cylinder 17, having piston 18, piston rod 19, andstufli-ngbox 19 they being of the ordinary construction for such parts.The lower end of the piston rod is connected with a journal box 1 1 b-means of a pin, 20, through the boss 21, of t e journal box. The pistonnormally occupies a position in the cylinder midway its ends. Extendingout from the lower end of each cylinder is an arm 22, from which a rod23, screw threaded and provided with adjusting nuts 24 and securing nuts25 extends downward to the frame 1 for assisting in su portin thecylinder and also, in relieving t braxfiret 1.5 from too much of astrain as pressure is applied upon the journal boxes 11.

Extending upward from each cylinder are pipes 26, which connect thewater spaces at the upper ends of the cylinders, and near the lower endsof the cylinders anarm 27, ex-

tends outward and from which a pipe 27",

For

livering a pressure of 75 to 100 pounds per square inch, and the other,29, only 10 to 20 pounds. A pipe 30, leads from the high pressure pumpand one 31, from the low pressure pump to the three way valve 32, andfrom which valve a pipe 33 extends to a cut off, or four way valve 32and from which latter valve pipes 34 and 35, extend to the cylindernearest the pumps, the pipe 34 connecting the four way valve with thewater space in the cylinder above its piston for producing the desiredpressure of the upper roll upon the lower one, and the pipe 35connecting the valve with the space below the piston for lessening thepressure or raising the roll the re uired amount.

It will be 0 served by referring to Fig. 5, that by turning the stem 36of the valve by means of its lever handle 37, by reason of the cut awayportion 38 in its stem, the current of Water which enters through one ofthe openings, 39 or 40, will be directed to the outlet 41, so that thepressure from either pump can be directed to the cylinder, as occasionrequires, and in Fig. 6, water entering the pipe 33 will pass to eitherend of the cylinder accordingly as the stem is turned, and at the sametime permit the opposite end of the cylinder to be relieved of its waterthrough the pipe 32 The valve 32 is provided with a pipe 32 forrelieving one endof the cylinder of water while pressure is beingapplied to the opposite end. The pumps are to be supplied with waterfrom a suitable source, the pump 29 through the pipe 42 and the pump 30,through a pipe not shown, they delivering it as before described throughtheir respective delivery pipes. N 0 particular style or make of pumpsare deemed essential.

For raisin the upper roll entirely free from the lower roIl for puttingon or removing a felt, or for any other purpose, a loop 43, incloses thejournal 11 upon both ends of the roll, or if only one end is re uired tobe raised, then upon one end only, t e loo being connected with thejournal box 12 y means of nuts 44 upon the ends of the loop, and forraising one end of the lower roll, a link 45 is slipped over an end of ajournal of each roll. The pressure cylinders being directly over thejournals of the pressing roll, and with no intervening mechanism torequire the attention of the operator their action can beinstantaneously applied by merely swinging the lever handles of thevalves, so that upon the occasion of a crush of the pulp relief can beinstantaneous.

I am aware that it is not new to apply a hydraulic pressure to pressingrolls for various purposes, but I am not aware that it has been appliedin as direct and simple manner as is herein shown and described, andwith as few pieces entering into its construction.

Having described my invention, what I claim and desire to secure byLetters Patent,

1. In a hydraulic device for a ress roll, a frame for supporting a pairof ro ls, a standard arranged vertically upon the frame at each end ofthe rolls, a planed way upon each standard, a journal box above eachjournal of the pressing roll arranged for a vertical movement along saidways, a loop extending downward from a journal box, around a journal andbeing secured to said journal box, a water pressure cylinder secured tosaid standard above each journal box, a piston in each cylinder, apiston rod extendin downward from each piston, a connection etween thelower end of each rod and a journal box of said roll, a stufling boxupon the lower end of each cylinder through which a piston rod passes,pipes arranged for connecting corresponding water spaces in the u )erand lower ends of the cylinders, a suita le pum and source of Watersupply for producing t re required pressure in the cylinders, pi esarranged for delivering water from sai pump to a cut ofi valve, a cutoff valve, pipes for directing the water from said pump to each end ofone of said cylinders and also, for relieving the end of said cylinderopposite to that in which pressure is being applied, of pressure.

2. In a hydraulic device for a press roll, a frame for supporting therolls, a standard arranged vertically upon the frame at each end of therolls, a ournal box for the pressing roll arranged for a verticalmovement upon the standards and means for causing a journal of said rollto accompany the box in said movement, awater pressure cylinder securedto each standard directly above a journal box at each end of said roll,a piston in each cylinder, a piston rod extending downward from eachpiston, and a connection between the lower end of each iston rod and ajournal box of the roll, a stufEng box upon each cylinder through whicha piston rod passes,

pipes arranged for connecting corresponding water s aces in the upperand lower ends of the cylinders, a hi h pressure pump, a low pressurepump, each having a suitable water supply, a pipe leading from each pumpto a three way valve, a pipe leading from said three way valve to a cutoff, or four way valve, pipes arranged for delivering water from saidlast named valve to both upper and lower ends of one of said cylinders,and a pipe for relieving the cylinder upon the side of the pistonopposite to that upon which pressure is being applied of water, inaccordance with the position into which the stem of said valve isturned.

3. In a hydraulic device for a press roll, a frame for supporting a pairof rolls, a journal box above each journal of the pressing roll arrangedto slide upon a vertically arranged standard of the frame, means forcausing a boxes, an arm extending Outward from near the lower end ofeach cylinder, a rod extending downward from each of said armsto themachine frame, adjusting and securing nuts on each end of said rod, apiston in each cylinder arranged for a reciprocation therein, a pistonrod extending downward from each piston and being connected with ajournal box thereunder, a stuffing box below each cylinder through whichthe piston rod passes,

pipes arranged between said cylinders and communicating with theinterior of corresponding ends of said cylinders, and meansfor producinga water pressure, simultaneously in each cylinder above or below itspiston and of relieving the end "of the cylinder opposite to that uponwhich pressure is being 20 applied, of water.

JOHN LOUIS COENENQ.

Witnesses:

F. E. BALLISTER, W. H. HINTER'rHUER.

